历年中国"互联网+"大学生创新创业大赛获奖作品分析

自2015年举办中国"互联网+"大学生创新创业大赛以来,该赛事已经成为国内规格最高、覆盖面最广、影响力最大、参与人数最多的大学生创新创业赛事之一.该文就前五届"互联网+"大学生创新创业大赛的基本信息、获奖情况等信息进行梳理和分析,总结相关经验,引导更多的师生关注"互联网+"大学生创新创业大赛,不断提升创新创业人才培养水平.     

CPI之GEKS指数序列更新方法及窗口长度选择问题辨析

大数据来源下CPI指数的创新编制,对及时了解新经济时代的物价走向和识别通胀危机、预测宏观经济拐点以实现我国通胀治理现代化、推动经济平稳和高质量发展具有重大意义。GEKS多边指数是近些年国际学术界重点研发的大数据热点价格指数,但其构造方法颇具争议。借助超市扫描大数据,就GEKS指数序列更新方法、窗口长度选择等学界难题开展理论与实证研究,获得了以下富有启发性的结论:①GEKS指数序列更新方法2、3应用效果相对较差;②随着窗口长度的增加,GEKS环比价格指数会趋于单位值,不同更新方法下的GEKS链式指数也会呈现一定的趋同性;而GEKS指数的通胀趋势判断力却不受此影响,但更新方法的选择却会导致其不同的通胀趋势预测结果;③更新方法4会随着窗口长度的增加而呈现更强的替代偏误,方法1却没有出现明显的替代偏误。综合而言,更新方法1和13个月窗口长度应该是编制GEKS指数序列更为合理的组合方式。     

Alienation and its correlates: A meta-analysis

We provide a meta-analysis of alienation, outlining the extent to which it is predicted by individual differences (need for achievement), role stressors (role conflict), leader dimensions (initiating structure), and aspects of the work context (formalization). We also examine its relationship with outcomes such as employee attitudes (job satisfaction), performance (task performance), withdrawal (absenteeism), and side effects (drinking). We examined these relationships based on data from 45 primary studies and 227 statistically independent relationships. Our meta-analysis provides cumulative evidence for effect sizes across multiple settings and respondents, clarifies ambiguous aspects of the construct, and presents more information on the extent to which alienation can be seen as the opposite of job involvement.     

我国上市公司固定资产投资规模财务影响因素研究

固定资产投资对宏观经济增长和微观企业发展意义重大,研究我国上市公司投资规模影响因素具有现实意义.通过对经典投资理论和实证研究成果的回顾,提出影响我国上市公司投资规模的因素,并结合上市公司数据实证检验了这些因素.研究结论显示,经典投资理论对上市公司确定投资规模具有适用性,上市公司投资规模主要取决于面临的投资机会、内部现金流和负债程度,不同行业、不同规模公司的投资规模确定还有自身特点.     

三峡工程在市场机制下的项目管理成功之路

三峡工程作为特大型水电工程以及特殊的社会地位,在工程建设微观运作上,果断选择用市场机制的方式运作工程,推进了现代项目管理的实施进程,系统控制目标如期实现,水电资源得到优化配置。宏观调控与微观机制融为一体,优势整合,开拓出三峡工程用市场机制建设特大型工程的成功之路。     

Total Economic Consequences of an Influenza Outbreak in the United States

Pandemic influenza represents a serious threat not only to the population of the United States, but also to its economy. In this study, we analyze the total economic consequences of potential influenza outbreaks in the United States for four cases based on the distinctions between disease severity and the presence/absence of vaccinations. The analysis is based on data and parameters on influenza obtained from the Centers for Disease Control and the general literature. A state‐of‐the‐art economic impact modeling approach, computable general equilibrium, is applied to analyze a wide range of potential impacts stemming from the outbreaks. This study examines the economic impacts from changes in medical expenditures and workforce participation, and also takes into consideration different types of avoidance behavior and resilience actions not previously fully studied. Our results indicate that, in the absence of avoidance and resilience effects, a pandemic influenza outbreak could result in a loss in U.S. GDP of $25.4 billion, but that vaccination could reduce the losses to $19.9 billion. When behavioral and resilience factors are taken into account, a pandemic influenza outbreak could result in GDP losses of $45.3 billion without vaccination and $34.4 billion with vaccination. These results indicate the importance of including a broader set of causal factors to achieve more accurate estimates of the total economic impacts of not just pandemic influenza but biothreats in general. The results also highlight a number of actionable items that government policymakers and public health officials can use to help reduce potential economic losses from the outbreaks.